Tank design



FIG. 1 is a front view of an embodiment of a tank design;

FIG. 2 is a right side view of the embodiment of FIG. 1;

FIG. 3 is a rear view of the embodiment of FIG. 1;

FIG, 4 is a left side view of the embodiment of FIG. 1;

FIG. 5 is a bottom view of the embodiment of FIG. 1;

FIG. 6 is a top view of the embodiment of FIG. 1;

FIG. 7 is a left-front perspective view of the embodiment of FIG. 1; and,

FIG. 8 is a right-front perspective view of the embodiment of FIG. 1. 

CLAIM The ornamental design for a tank design, as shown and described. 